초록 ▼

A system of rotatably and pivotally mounted radially extended bent supports for radially extending windmill rotor vanes in combination with axially movable radially extended control struts connected to the vanes with semi-automatic and automatic torque and other sensing and servo units provide autom

A system of rotatably and pivotally mounted radially extended bent supports for radially extending windmill rotor vanes in combination with axially movable radially extended control struts connected to the vanes with semi-automatic and automatic torque and other sensing and servo units provide automatic adjustment of the windmill vanes relative to their axes of rotation to produce mechanical output at constant torque or at constant speed or electrical quantities dependent thereon.

대표청구항 ▼

A method for adjusting the pitch of a plurality of like windmill airfoil blades behind a tower support therefor comprising the steps of: bending each of a plurality of rigid spars into at least two sections, mounting the section of each of said spars nearest one end for rotation relative to a surfac

A method for adjusting the pitch of a plurality of like windmill airfoil blades behind a tower support therefor comprising the steps of: bending each of a plurality of rigid spars into at least two sections, mounting the section of each of said spars nearest one end for rotation relative to a surface transverse to the direction of motion of the wind and at an angle to said surface forming a fixed dihedral angle, securing the airfoil blade in a longitudinal direction to the section nearest the other end thereof of the spar and then concurrently and equally and continuously firmly supporting and moving each of said blades in an arcuate direction substantially paralled with the direction of motion of the wind for adjusting a variable dihedral angle in response to the force of the wind and torque developed by said blades to change the pitch of the airfoil relative to the wind wherein the total dihedral angle of the each of said blades is a composite angle comprising the fixed dihedral angle and the blades move with an angle to the direction of the motion of the wind that decreases as the speed of the wind increases and with a forward motion of the peripheral portion of each blade as the speed of such blade increases and a rearward motion of the peripheral portion of each blade as the speed of such blade decreases and the variable dihedral angle.